环境准备

更新软件源缓存

apt update

安装 python3.7

apt install python3.7 python3-pip -y

配置

update-alternatives --install /usr/bin/python3 python3  /usr/bin/python3.7 100

# update-alternatives --query python3                                                                                              [1/1902]Name: python3                                                                                                                                                     Link: /usr/bin/python3
Status: auto
Best: /usr/bin/python3.7
Value: /usr/bin/python3.7

Alternative: /usr/bin/python3.7
Priority: 100

# python3 -V
Python 3.7.5

更新 pip

pip3 install --upgrade setuptools
python3 -m pip install --upgrade pip

安装自己的依赖

pip3 install -i <https://pypi.tuna.tsinghua.edu.cn/simple> -r requirements.txt